Lock for lamp sockets



March 10, 1931. R. H. OLLEY 1,796,118

LOCK FOR LAMP SOCKETS Filed March 19, 1928 INVENTOR.

A TTORNEYS Patented Mar. 10, 1931 UNTED STATES PATENT FFCZ RAYMOND H. OLLEY, OliI SYRACUSE, NEW YORK, ASSGNOR TO CBOUSE-H1NDES COM- PANY, OF SYRACUSE, NEW' YORK,

A CORPORATION OF NEWT YORK Look ron :LAMP socKEfrs Application filed. March 19,

This invention relates to lamp sockets and has for its object a particularly simple and efticient means Jfor locking a lamp base or other plug` in the socket so that the lamp or plug i can not be removed by an unauthorized perhereinafter set forth and claimed.

jaw or locking bolt.

jaw carried by the body In describing this invention reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is a plan view bodying my invention.

Figure 2 is a side elevation thereof, the body of the socket being shown as separated oit a lamp socket emslightly from the base.

Figure 3 is an enlarged side elevation ot the lamp socket partly in section.

Figures Ll, 5, and 6 are respectively an end elevation, plan view and side elevation of the Figures 7 and 8 are respectively an elevation and plan view of the operating screw.

Figure 9 is a section taken on line 9-9, Figure 1.

1 designates the lamp socket body of insulation which is mounted upon a suitable baseQ. having means as screws 3 Jfor securing it to a support. The body is formed with the usual recess 4 opening through its iront tace and in which the usual central and threaded' sleeve terminals 5, 6 ot the lampfsocket are mounted. Y

It will be understood that the sleeve terminals and the lamp socket are threaded.

The body is secured to the base as by screws 7 extending through the terminals 5, 6 and threaded to the base in any well known manner.

8 is a member for locking the lamp socket base or any other plug suitable to be inserted in a lamp socket, this member being a bolt `or and extending later- 4 and through a passage this jaw or bolt havits ends for coacting ally into the recess in the sleeve terminal 6, ing inclined teeth 9 at 1928. Serial No. 262,775.

with the lamp socket base and holding it from retrograde turning movement.

The bolt 8 is also Jormed with a flange or shoulder 10 for engaging the outer tace of the sleeve terminal and limiting the inward movement thereof, that is, preventing it from displacement. This bolt is usually slidably mounted upon the bottom of a second recess 11 opening through the front face ot' the body at one side of the recess 1l, the recess having a central deeper portion or notch 12 on the bottom of which the jaw or bolt slides.

The bolt is operable from the front side of the body 1 by an operating member as a screw located in the recess 11 and arranged at an angle other than a right angle to the sliding jaw or bolt 8, it being here shown as arranged at an oblique angle and having a coni cal end 13 thrusting in a complemental conical socket 14 in the bolt 8.

In the illustrated embodiment of my in vention, the screw threads into a bridge 15 located in the recess 11 with its ends on the bottoms of the shallower portions of the recess 11, the bridge extending across the upper end ot the deeper portion or notch in which the bolt 8 is located.

ln order to make the screw easily operable and operable only by an authorized person, the head 16 of the screw is formed to receive a key, it being here shown as provided with notches 17 so that a bi'turcated key is required to operate the same.

1n operation, after the lamp is screwed into the socket or nal 6, the screw 11 is tightened thrusting the toothed end 9 into snug engagement with the lamp base so that it can not be turned out of the socket.

This locking means is particularly advantageous in that it consists of but a few compactly arranged and easily assembled parts and in that it is operable from the front or lamp side of the socket.

Vhat I claim is:

A lamp socket comprising a body formed with a recess opening through its front face, a sleeve terminal mounted in the recess, a second recess located at one side oi the first recess and being ot less depth than the same the threaded sleeve termiand also opening through the front face of Vthe body, the recess being,- formed with a notch in its bottom between its ends, the notch opening into the first recess, a sliding vlocking boit on the bottomv of the notch and 'projecting into the virst recess, the sleeve Y terminal having 'a passageathrough which the end ofthe locking bolt projects, zu bridge mounted in the second recess and extending across said notch and an operating screw threading'into the bridge and ceac-ting with the bolt to operate the same. Y v In testimony whereof, I have hereunto signed my name,` at Syracuse, in the county 15 of Onondaga, and in the State of New York,

f this 8th day of'March, 1928.

f RAYMOND H. OLLEY. 

